US2145536A - Mophead - Google Patents

Description

Jam, 31, W39,

C G. WATSON MOPHEAD Original Filed Feb. 11, 1937 Patented Jan. 31, 1939 UNITED STATES 2,145,536 MOPHEAD Claude Gqodin Watson, Oakland, Calif.

Application February 11, 1937, Serial No. 125,313

1 Renewed December 2,1938

1 Claim. mils-411 This invention relates to mops and more particularly improvements in mops with roller wringer heads of the same general type as disclosed in Patent 2,029,235. I v

The first object of my invention is toprovide means for separating the rollers to facilitate removal and replacement of the mop swab.

The second object of my invention is to provide means to vary and regulate the pressure of the wringer rolls on the mop swab in combination with the roller separating means.

A third object is toprovide an improved means for securing the rollers within the mop head frame.

Further objects and advantages of my invention are more apparent from the accompanying drawing and description wherein like characters of reference are used to designate similar parts throughout the specification.

Figure l is a front view of a mop embodying my invention partly in cross section.

Figure 2 is a side elevation of Figure 1.

Figure 3 is a cross section view taken on line 3-3 of Figure l.

Referring in detail to the drawing number I is a mop handle to which is attached a mop head frame 59. The frame 59 includes a mop swab engaging strip 5!, side strips 52 and 53, and a handle engaging strip 54. The strip 54 has portions 55 and 55 embracing an end of the handle 5 and a bolt 57 extending through the portions 55 and 55 and the handle I, whereby the handle is secured to the frame 59. The strip 54 has welded or brazed to its concave inner surface a strip 54, adapted to strengthen the mop frame at this point and to give suflicient thickness to the otherwise thin strip 54, for threaded bores into which set screws 63 and 64 are threaded. The sides 52 and 53 are each pressed outwardly longitudinally to form elongated grooves 58 and 59, into which extends the roller spindle 60 of the movable roller 23. The grooves 58 and 59 strengthen the said sides and are sufficiently elongated to permit the movable roller spindle 69 to slide within it and carry the movable roller 23 away from the non-sliding roller 24 when yoke 52 is moved toward the handle I by means of set screws 53 and 64 and their interconnecting parts, hereinafter to be described. The roller 24 is fixed against sliding movement within the grooves 58 and 59, the spindle 6| of said roller being journaled within openings 65 formed in an end of each of the grooves 58 and 59. The purpose of separating the rollers is to permit ready removal and replacement of the mop swab without disassembly and without the need of any extraneous levers, cranks, etc.

Set screws 63 and '64 are identical in construction and are threaded into handle engaging bar 54 near each end thereof. They include a flat head 66 for a thumb and finger grip, an elongated threaded shank 61 and a reduced unthreaded tip 68. The tip 68 extends through the mid-section of a short spring equalizer bar 69 and is held in connection with the said equalizer bar by a pin 19.

Extending upwardly from yoke 62 and suitably fixed thereto, through each end of equalizer bar 69 arerods H and 12, which rods are in sliding engagement with the equalizer bar 59 and. said rods are provided with keeper pins Ha and 12a, similar to pin 19, but on the opposite side of bar 69.

Around each rod H and 12 are coil springs 13 and I4 with one end of the coil resting against the equalizer bar 69 and the other end against movable yoke 62, which carries the movable roller 23 by means of arms 62a and 62b, through which the spindle 60 extends into the grooves 58 and 59.

The rollers 23 and 24 are of rubber, the spindles around which they are mounted extending throughout their length and through openings in the yoke arms 62a and 62b into grooves 58 and 59. This means of securing the rollers in the mop frame 59 is a decided improvement over the prior art, as it eliminates bolts and nuts and the need for cutting threads all of which increase the cost of manufacture and complicate the device for the housewife.

The equalizer bars, one of which has hereinbefore been described, are adjustable on the rod H and 12 to stationary positions by means of the said set screws and by such adjustment not only may the rollers be separated, but the compression of the springs may be varied to increase or decrease the pressure of the rollers on the mop swab as the thickness of the swab fabric may warrant or according to the extent of the wringing action desired and the strength of the user.

To further improve the working efficiency and to prevent scratching the floor, I have provided a rubber shell or tire 15 adapted to be secured to the strip 5| of frame 50. The frame 50 has small lugs 50a and 50b adapted to engage with corresponding openings in the rubber shell 15.

The mop swab 2| is engaged between the rollers 23 and 24 and is pulled back and forth between the rollers for the wringing operation by fasteners 6, fully described in Patent 2,029,235. Each fastener 6 is secured to slides 2 and 3 and the said slides are mounted on flat metal guide strips l secured on opposite sides of the handle in any suitable manner as by screws 16. As the fasteners, slides and guide strips are not the specific subject matter of this invention a detailed description thereof is not necessary, other than to say that each guide strip Ill carries one slide and fastener, as in Figure 3; said fastener being in engagement with the hem 20 of mop swab 2|.

The operation of the improved features is quite apparent, the mop is rested against a table and the set screws are turned to thread the shanks in or out as desired. If threaded to the left the roller 23 is raised in the grooves and the swab is easily detached from the head or if the set screws are turned to the right the pressure of the top roller is increased and the spring compression varied. The compression of the springs is of course changed due to the fact that the equalizer bar slides up and down on the rods H and I2 to increase or decrease spring compression.

While certain features of the present invention are more or less specifically described, I wish it understood that various changes may be resorted to within the scope of the appended claim.

What I claim is:

A mop head including a substantially U-shaped frame having guide grooves in each leg portion thereof, resilient rollers, spindle shafts for each roller, one of said spindle shafts being fixedly journaled adjacent the outer end of said leg portions and the other spindle being journalled in sliding engagement within the said guide grooves, a yoke member within the frame connected at each end thereof to the sliding spindle, rods extending from the said yoke member substantially parallel to the leg portions of said frame, coiled compression springs on the said rods, sliding equalizer bars on the said rods contacting the said springs, stop means on the free end of each rod adapted to confine the said equalizer bars on said rods, and screw threaded means located substantially adjacent each end of said shafts and connected with said frame and said equalizer bars; whereby when said means are threaded in one direction the equalizer bars engage the said springs to move the roller carried by the yoke into engagement with a mop swab between the rollers, further movement of said means then compressing said-springs to apply resilient pressure; and when threaded in the opposite direction slide the equalizer bars along said rods into engagement with said stop means, continued movement of said means then moving the yoke and the roller carried thereby to positively separate said wringer rolls to facilitate removal or replacement of a mop swab.

CLAUDE GOODIN WATSON.

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